Adjustable Capability Evaluation of Integrated Energy Systems Considering Demand Response and Economic Constraints

Li, Yang; Li, Rongqiang; Shi, Linjun; Wu, Feng; Zhou, Jianhua; Liu, Jian; Lin, Keman

doi:10.3390/en16248048

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…Load-side resource management, as a form of regulation, is able to realize active peaking to a certain extent and enhance the regulation capability of the power grid [9,10]. Compared to residential and commercial loads, industrial loads are characterized by a high degree of automation, a large regulation range, and low transformation costs [11].…”

Section: Introductionmentioning

confidence: 99%

Research on Coordinated Optimization of Source-Load-Storage Considering Renewable Energy and Load Similarity

Wang,

Du,

Wang

et al. 2024

Energies

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Currently, the global energy revolution in the direction of green and low-carbon technologies is flourishing. The large-scale integration of renewable energy into the grid has led to significant fluctuations in the net load of the power system. To meet the energy balance requirements of the power system, the pressure on conventional power generation units to adjust and regulate has increased. The efficient utilization of the regulation capability of controllable industrial loads and energy storage can achieve the similarity between renewable energy curves and load curves, thereby reducing the peak-to-valley difference and volatility of the net load. This approach also decreases the adjustment pressure on conventional generating units. Therefore, this paper proposes a two-stage optimization scheduling strategy considering the similarity between renewable energy and load, including energy storage and industrial load participation. The combination of the Euclidean distance, which measures the similarity between the magnitude of renewable energy–load curves, and the load tracking coefficient, which measures the similarity in curve shape, is used to measure the similarity between renewable energy and load profiles. This measurement method is introduced into the source-load-storage optimal scheduling to establish a two-stage optimization model. In the first stage, the model is set up to maximize the similarity between renewable energy and the load profile and minimize the cost of energy storage and industrial load regulation to obtain the desired load curve and new energy output curve. In the second stage, the model is set up to minimize the overall operation cost by considering the costs associated with abandoning the new energy sources and shedding loads to optimize the output of conventional generator sets. Through a case analysis, it is verified that the proposed scheduling strategy can achieve the tracking of the load curve to the new energy curve, reducing the peak-to-valley difference of the net load curve by 48.52% and the fluctuation by 67.54% compared to the original curve. These improvements effectively enhance the net load curve and reduce the difficulty in regulating conventional power generation units. Furthermore, the strategy achieves the full discard of renewable energy and reduces the system operating costs by 4.19%, effectively promoting the discard of renewable energy and reducing the system operating costs.

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Section: Introductionmentioning

confidence: 99%

Research on Coordinated Optimization of Source-Load-Storage Considering Renewable Energy and Load Similarity

Wang,

Du,

Wang

et al. 2024

Energies

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Corrective Evaluation of Response Capabilities of Flexible Demand-Side Resources Considering Communication Delay in Smart Grids

Liu,

Tao

et al. 2024

Electronics

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With the gradual increase in the proportion of new energy sources in the power grid, there is an urgent need for more flexible resources to participate in short-term regulation. The impact of communication network channel quality will continue to magnify, and factors such as communication latency may directly affect the efficiency and effectiveness of resource regulation. In this context of a large number of flexible demand-side resources accessing the grid, this article proposes a bidirectional channel delay measurement method based on MQTT (Message Queuing Telemetry Transport). It can effectively evaluate the real-time performance of communication links, considering that resources mainly access the grid through the public network. Subsequently, focusing on two typical types of resources on the demand side, namely, split air conditioners and central air conditioners, this article proposes an assessment method for correcting the response capabilities of air conditioning resources considering communication latency. Experimental simulations are conducted, and the results demonstrate that under given communication conditions, this method can more accurately estimate the response capability of air conditioners. This provides a basis for formulating more reasonable scheduling strategies, avoiding excessive or insufficient resource regulation caused by communication issues, and aiding the power grid in achieving precise scheduling.

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Simplified Approach for Wind Uncertainty Cost Functions using a Mixture of Uniform Probability Distribution

García,

Rehman,

Rodriguez

2024

Wseas Transactions on Power Systems

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Wind energy generation is an individual source of energy considered in renewable energy resources. It is completely dependent on the natural process of air blown in the area or past forecasting of air blown data. It is considered an uncertain source of energy and less reliable in the context of real-time energy provisions. To make this wind energy more reliable and consistent, we are introducing a simplified approach for wind uncertainty cost functions based on uniform probability distributions and its evaluation for usage. We have developed analytical mathematics cost functions based on several assumptions and they are constructed using Weibull and Rayleigh probability distributions. The proposed method produces the required results to make this energy reliable and consistent with the distribution networks. Computing time and complexity are less as compared to the other methods to minimize the uncertainty of wind energy.

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Adjustable Capability Evaluation of Integrated Energy Systems Considering Demand Response and Economic Constraints

Cited by 3 publications

References 40 publications

Research on Coordinated Optimization of Source-Load-Storage Considering Renewable Energy and Load Similarity

Research on Coordinated Optimization of Source-Load-Storage Considering Renewable Energy and Load Similarity

Corrective Evaluation of Response Capabilities of Flexible Demand-Side Resources Considering Communication Delay in Smart Grids

Simplified Approach for Wind Uncertainty Cost Functions using a Mixture of Uniform Probability Distribution

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